FINANCIAL INSTRUMENTS AND FAIR VALUE - Assets Liabilities Measured At Fair Value On Recurring Basis (Detail 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets	$ 10,742	$ 20,108
Interest rate swaps liability		(57)
Fair Value, Measurements, Recurring | Money market funds
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets	166	8,483
Fair Value, Measurements, Recurring | Marketable securities
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets	10,576	11,625
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) | Money market funds
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets	166	8,483
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) | Marketable securities
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets	10,576	11,625
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) | Interest rate swaps liability
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Interest rate swaps liability
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Money market funds
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Marketable securities
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps liability
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Interest rate swaps liability	(57)
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Money market funds
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Marketable securities
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swaps liability
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Interest rate swaps liability